Update: Aliens Minimates is actually a fan game rather than a fan film as we initially thought. It was created by Dave School which is a school for visual effects and animation students, and one team handled the cinematics while the other handled the gaming side. It’s basically a 2.5D side-scroller, made in Unity 3D, and features 8 mini-levels. Ripley has to team up with the Colonial Marines and Bishop, voiced by Lance Henriksen, to destroy the aliens. You can check out the cinematics from the game below or play the game right here in your web browser (600MB).

EDIT- The box is on the top right catwalk. Still learning the difference between left and right. Great quality and very cool. If it were a full scale title, this would be great as an Indy-type game for download on Xbox Live and/or PSN. It's the Legos game that should have been.

Edit: Think I got as far as the reactor room where you have to get to a vent stealthily and I accidentally exited the game. Biggest issue with these Unity games, there's no sorta save points or anything so you have to do it all in one sitting.